Low energy high angular resolution neutral atom detection by means of micro-shuttering techniques: the BepiColombo SERENA/ELENA sensor
| Autor: | Orsini, S., Di Lellis, A. M., Milillo, A., De Angelis, E., Mura, A., Selci, S., Dandouras, I., Cerulli-Irelli, P., Leoni, R., Mangano, V., Massetti, S., Mattioli, F., Orfei, R., Austin, C., Medale, J. -L., Vertolli, N., Di Giulio, D. |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | AIP Conf.Proc.1144:91-101,2009 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1063/1.3169310 |
| Popis: | The neutral sensor ELENA (Emitted Low-Energy Neutral Atoms) for the ESA cornerstone BepiColombo mission to Mercury (in the SERENA instrument package) is a new kind of low energetic neutral atoms instrument, mostly devoted to sputtering emission from planetary surfaces, from E ~20 eV up to E~5 keV, within 1-D (2x76 deg). ELENA is a Time-of-Flight (TOF) system, based on oscillating shutter (operated at frequencies up to a 100 kHz) and mechanical gratings: the incoming neutral particles directly impinge upon the entrance with a definite timing (START) and arrive to a STOP detector after a flight path. After a brief dissertation on the achievable scientific objectives, this paper describes the instrument, with the new design techniques approached for the neutral particles identification and the nano-techniques used for designing and manufacturing the nano-structure shuttering core of the ELENA sensor. The expected count-rates, based on the Hermean environment features, are shortly presented and discussed. Such design technologies could be fruitfully exported to different applications for planetary exploration. Comment: 11 pages |
| Databáze: | arXiv |
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